Rotational contour analysis of the vibronic bands in the high resolution emission spectra of the benzyl radical

The 6a(1)(0) and 6b(1)(0) vibronic bands in the 1(2)A(2)-1(2)B(2) electronic transition of the emission spectra of the benzyl radical obtained using a high resolution Fourier transform spectrometer are rotationally analyzed. The observed rotational contours were fitted by computer simulated rotational contours, providing determination of the variations, Delta A, Delta B, and Delta C of the rotational constants accompanying the vibronic transitions corresponding to each band, The molecular rotational constants A, B, and C are revised for the upper state and for the two lower states, respectively.